Factor by grouping.28r2 + 63ry - 4xr - 9xy
A. (4r + 9y)(7x - r)
B. (4r + 9y)(7r - x)
C. (4r + 9y)(x - 7r)
D. (9r + 4y)(7r - x)
Answer: B
Mathematics
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Calculate the flux of the field F across the closed plane curve C.F = (x + y)i + xyj; the curve C is the closed counterclockwise path around the rectangle with vertices at (0, 0), (6, 0), (6, 10), and (0, 10)
A. 240 B. - 20 C. 420 D. 340
Mathematics
Graph the pair of parametric equations in the rectangular coordinate system.x = 3 + 3 sin t, y = 3 + 3 cos t; 0 ? t ? 2? 
A. 
B. 
C. 
D. 
Mathematics
Write the percent as a fraction or mixed number in lowest terms.3.35%
A. 
B. 
C. 
D. 
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Provide an appropriate response.Explain how the graph of y = 3x - 2 - 3 can be obtained from the graph of y = 3x.
What will be an ideal response?
Mathematics